Emotional disorders (i.e., unipolar mood disorders and anxiety disorders) have become the most prevalent psychiatric disorders globally. It is estimated that anxiety problems and unipolar mood disorders affect 14% and 6.9% of the population, respectively, and comordibity may be as high as 50%. Comparable results have been obtained in Spain, where mood and anxiety disorders are the most prevalent psychiatric problems, with an estimated life-prevalence of 35.8% and 25.6%, respectively.